An audio interface is the small box that sits between your XLR microphone and your computer. It converts the analog signal your mic produces into digital audio your recording software can capture, supplies the mic preamp gain to boost that signal to a usable level, delivers phantom power to condenser microphones, and gives you headphone monitoring so you can hear yourself in real time.
For podcasting, that box decides more about your finished audio than the microphone does. It sets the noise floor you fight for the rest of the episode, it decides whether a hard-to-drive broadcast dynamic such as the SM7B can reach a healthy level without audible hiss, and it determines whether a second person in the room can monitor at all. We compared the ten interfaces below on preamp gain, input count, headphone output count, monitoring options, connectivity and platform support. Last checked in September 2026.
The short answer to the question most people ask: the Focusrite Scarlett Solo 3rd Gen is the best audio interface for most podcasters starting out, because it is the least complicated box that still gives you clean gain, reliable drivers and monitoring you can trust. Everything else in this guide is a better fit for a specific show shape rather than a general-purpose upgrade.
One note before we start. Of the ten units below, none records to internal media. Every one of them needs a computer, tablet or phone running as the recorder. If you want a box that writes files without a laptop, that is a different product category, and we cover the trade-off in the buying guide.
New to the wider category? Our guides to the best audio interfaces overall and best USB audio interfaces cover the music side of the market in more depth.
Top 3 Picks for Podcast Recording in 2026
Audient iD4 MKII
- Class-A console preamp
- Two headphone outputs
- Monitor mix and panning
- USB-C
All 10 Audio Interfaces at a Glance (October 2026)
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What Is an Audio Interface and Why Podcasters Need One
A microphone produces a small analog voltage. That voltage is too quiet and too fragile to travel into a computer port, so something has to amplify it, feed it a little electrical current if the mic needs it, and hand it to the recording software as a clean digital stream. That something is the audio interface.
Three jobs matter for podcasting. First, preamp gain: the amplifier inside the box takes a quiet mic signal and raises it to roughly the level a converter can work with. The amount of gain is measured in decibels, and more is not automatically better because pushing a cheap preamp hard is exactly how hiss gets into your track. Second, phantom power: a steady 48V supplied to a condenser or ribbon microphone through the XLR cable. Turn it on for a dynamic or ribbon mic and you risk damage, so per-channel switching is a real convenience. Third, monitoring: a direct hardware path from input to headphone jack, which is why you can talk with a low-latency monitoring option instead of hearing yourself through the software buffer.
Your computer’s built-in sound card does the conversion badly and offers no real preamp, no phantom power and no clean monitoring path. That is the entire argument for buying a separate box.
1. Focusrite Scarlett Solo 3rd Gen USB-C Audio Interface
Focusrite Scarlett Solo 3rd Gen USB-C Audio Interface
56dB gain range
24-bit/192kHz
Air mode
Gain Halo meters
Pros
- Clean preamps with plenty of gain for typical dynamic mics
- Reliable drivers across Mac Windows and iPadOS
- Gain Halo rings show level without looking away from the mic
- Air mode adds presence in one button press
Cons
- Only one mic input
- Welcome popup appears on every connection
- Plastic chassis
The Scarlett Solo is the interface I recommend to almost everyone reading this for the first time, and the reason is not exotic. It has 56dB of gain across a single XLR mic preamp, which is enough for a large-diaphragm condenser and comfortable for most dynamic broadcast mics when you sit them close. It converts at 24-bit/192kHz. It draws power from the USB bus, so there is no adapter to lose. And the driver situation has been settled for so long that troubleshooting advice is easy to find.
Solo means one channel, and that is the honest limitation. The unit also carries a 1/4 inch Hi-Z instrument input alongside the XLR, which is a small bonus if you ever want to record a guitar or a bass for a theme. There is a single headphone jack, which matters only if you are the only person in the room.
The Gain Halo rings around both knobs are the feature I use most. They change colour as the level climbs from green through amber to red, so you can set a level without breaking eye contact with the guest across the table. That sounds minor until you have run a remote interview through a two-channel recorder with no meters at all.
Air mode routes the signal through a high-frequency shelf, which is a fast answer to a dull dynamic mic. It is a starting point rather than an answer, because a microphone that sounds thin usually needs distance and room treatment more than it needs brightness.
56dB of gain covers most dynamic mics without a booster
The Solo is often paired with an SM7B because that microphone is cheap and everywhere. Fifty-six decibels is a sensible match for an SM7B at normal speaking distance with the gain at around three-quarters. If you push a very quiet ribbon dynamic instead, or sit the mic across a large desk, you will run out of clean range and an inline booster starts to make sense. For a typical dynamic or condenser, no extra box is needed.
One mic input is the only real limit
Plan this as a single-voice machine. Adding a co-host means a second preamp you do not have, and the workaround people reach for is a cheap analog mixer between the interface and the computer, which adds noise and level problems rather than removing them. If you already know a second person is joining, look at the two-channel units further down this list instead of planning an upgrade later.
2. Audient iD4 MKII Class-A Console Microphone Preamp
Audient Audio Interface iD4 MKII, Class A Console Microphone Preamp (High Speed USB-C, Monitor Mix and Monitor Panning Function, 2 Headphone Outputs, Mac/PC/iOS Compatible), Black
Class-A preamp from ASP8024 HE
24-bit/96kHz
Two headphone outputs
Monitor mix and panning
Pros
- Console-derived Class-A preamp holds up at higher gain
- Two independent headphone outputs for a host and a guest
- All-metal desktop housing
- Works with Mac PC and iOS over USB-C
Cons
- Only one mic preamp
- No MIDI or ADAT expansion
- No hardware power switch
The iD4 MKII is the pick when preamp quality matters more than channel count. Its microphone preamp is taken from Audient’s ASP8024 console hardware and runs in Class-A, which is a circuit topology rather than a marketing word here: the amplifying device stays in its linear region at low signal levels, and the result is a quieter, more transparent noise floor. When you are running an SM7B or a ribbon at healthy gain, that difference is audible in a way that 24-bit versus 96kHz never is.
The second headphone output is the feature that makes it interesting for a two-person show on a tight budget. One jack for you, one for a co-host, each with independent level. The headphone jack also has a monitor mix and a panning control, so a guest with no music in their ears can still hear themselves in the right stereo position without you building a separate cue mix.
Build quality is a genuine step up from the plastic units in this price area. The housing is metal, the case is a low flat slab that stays put on a desk, and it uses high-speed USB-C. The bundled software includes Cubase LE, Cubasis LE 2, a synthesiser, a compressor called Wall of Sound and a Loopmasters sample pack, which covers most of what a first episode needs.
Two things to plan around. There is one microphone preamp, so this is a solo or alternate-spoken-machine rather than a two-host interface. And the input level is set in software rather than with a front-panel knob, which means a physical fader move during a live take is not available to you.
Two headphone outputs solve the co-host problem cheaply
Most compact desktop interfaces give you a single headphone jack, which is the number one complaint podcasters raise in forums. A second person who cannot hear themselves talks over you, and you end up either turning the level up until the guest is uncomfortable or handing them your speakers. Two independent outputs remove that negotiation entirely, and the iD4 MKII is one of the few ways to get them at this level.
One preamp means planning around a single microphone
Do not buy this for a co-hosted show unless you already have a way to handle the second voice. There is no instrument input to borrow, no second XLR, and no ADAT port to attach another preamp later. The class-A circuitry is the reason to choose it, and it is a single-channel argument. If your show has two microphones in the room, the two-channel units in this guide serve you better.
3. Audient EVO 4 USB Audio Interface
Audient EVO 4 USB Audio Interface
24-bit/96kHz with AKM converters
Two EVO mic preamps
Loopback
Smart Gain
Pros
- Two Audient preamps in a two-channel body
- Loopback captures system audio for streaming and call recording
- Split phantom power protects one mic when using two
- Smart Gain sets levels automatically
Cons
- Tall plastic form factor can tip or slide
- Headphone jack mutes the speaker outputs
- No per-channel pad switches
The EVO 4 is the pick I return to when someone needs two real preamps plus the one feature nothing else in the entry tier offers: loopback. Loopback lets you record the audio your computer is playing, so a video call with a remote guest, a soundtrack, or a notification chime can be captured into your session and recorded on its own track. Podcasters who interview people remotely and want both sides of the conversation in one file generally need this, and most two-channel competitors leave it out.
Smart Gain is the other podcast-specific touch. You ask it to listen, it sets the input level, and you get a numeric result you can repeat next week. That repeatability is worth more to a consistent show than a fast manual guess. The converters are AKM silicon running at 24-bit/96kHz, which is more resolution than a 48kHz podcast workflow uses.
Split phantom power is the switch you will thank yourself for. A global phantom switch feeds both channels together, so if you run a condenser on channel one and a dynamic on channel two, you either damage the dynamic or abandon the condenser. Here each channel has its own switch, which is the correct behaviour for a two-microphone room.
There is a JFET instrument input for tracking if you need it, and the unit is USB bus powered with no external brick. The free software bundle includes Cubase LE and Cubasis LE 2 along with a set of plugins.
Loopback makes this the right pick for remote calls and streaming
When a guest joins by video link, the software route for capturing their voice goes through your sound card, which on most computers means the speakers. Loopback gives you a proper digital return instead, at the file quality your microphone tracks are recorded at. For a show that mixes live remote interviews, that single feature is worth more than another preamp would be.
Split phantom power protects the second microphone
A two-microphone room almost always means one condenser and one dynamic, because one host will own a dynamic broadcast mic and the other will buy whatever condenser was recommended. A shared phantom switch forces a bad choice. The per-channel switching here removes the risk and removes the rule you have to remember on a busy recording day.
4. Focusrite Vocaster Two Podcasting Interface
Focusrite Vocaster Two
Over 70dB of gain
Auto Gain
Enhance presets
Two mics two headphones
Pros
- More than 70dB of gain handles hard dynamic mics without a booster
- Auto Gain and Enhance remove manual level work
- Dedicated mute buttons for host and guest
- Bluetooth brings a phone caller into the session
Cons
- No onboard sound pads
- High-pass filter cannot be switched off
- Headphone jacks sit at an angle and stick out
The Vocaster Two is built specifically for the two-person podcast, and the design decisions follow from that. You get two microphone inputs and two headphone outputs, which is the correct count for a host and a guest, plus more than 70dB of gain on the preamps. That figure is the headline: it is the highest gain range of any unit in this roundup, and it means an SM7B, a RE20 or a quiet ribbon reaches a healthy level without a Cloudlifter or an inline booster.
Auto Gain does the same job as the EVO 4’s Smart Gain, and Enhance applies one of four voice presets. Both exist so a first-time creator does not open a compressor plugin before the first take. Treat Enhance as a starting reference: a heavily processed default sound is harder to undo in a mix than a flat track.
The two features I did not expect to use as often as I do are the mute buttons and the Bluetooth phone input. A hardware mute for each channel is instant and cannot be missed on a live stream, and Bluetooth lets you bring a phone call into the recording as a track rather than as a speaker in the room. There is also a camera connection over a 3.5mm TRS jack for video work.
The unit is USB-C powered, measures 4.45 by 8.84 by 1.99 inches and weighs 1.8 pounds, so it fits a bag for a remote recording day. Supported platforms are Mac, Windows and iOS.
Over 70dB of gain ends the booster debate
Hard dynamic microphones such as the SM7B and RE20 are quiet by design, and the usual advice is to add an inline booster. With more than 70dB available here, that advice does not apply to this box. You set the gain once, watch the ring, and keep the signal chain short. Fewer boxes between the mic and the converter is fewer places for noise to enter.
Enhance presets are a reference, not a finished sound
Four one-touch voice presets get you a usable recording fast, and they are genuinely helpful on a first episode or an unexpected guest. They also add processing you did not choose. Record a take with Enhance off as well, then decide. The high-pass filter is always engaged and cannot be bypassed, so if a mic has real energy below the cutoff you will hear the difference.
5. Behringer UMC404HD 4×4 USB Audio and MIDI Interface
Behringer U-PHORIA UMC404HD Audiophile 4×4, 24-Bit/192 kHz USB Audio/MIDI Interface with Midas Mic Preamplifiers
Four MIDAS preamps
4 inputs 4 outputs
MIDI I/O
24-bit/192kHz
Pros
- Four MIDAS-designed preamps with phantom power
- Metal chassis that survives a mobile bag
- Four outputs let you use monitors plus a headphone feed
- MIDI input and output included at no extra cost
Cons
- USB 2.0 only
- Footprint is much larger than a two-channel box
- Manufacturer support is thin
The UMC404HD is the answer when a third or fourth person sits in the room. Four MIDAS-designed preamps, four inputs and four outputs, all at 24-bit/192kHz, in a metal chassis that weighs 2.7 pounds. A three-person panel or a show with a host, co-host and a remote caller in the same session fits comfortably, and every channel can be recorded as a separate track for a proper mix later.
Four outputs is the detail that separates it from a three-person solution built on a two-channel box. You can run monitors for playback and a separate headphone feed for the guest mixer, or use a small analog distribution for three headphone pairs, without stealing an output meant for a microphone.
The MIDI input and output are unusual at this level and genuinely useful if your show uses a soundboard or a MIDI-triggered sound effect. The chassis is metal rather than plastic, which is the difference between a box that survives a year of being moved and one that does not.
There is no loopback on this unit, so remote guest audio has to be handled by a software virtual audio device rather than by the hardware. That is workable and most podcast software handles it, but it adds a step and adds a driver to troubleshoot. The interface runs on USB 2.0, which is the older standard and caps the practical channel count for low-latency monitoring.
Four preamps cover a three-person panel without a mixer
Once you are past two voices, an analog mixer in the signal chain starts costing you quality. Each extra stage adds gain, adds noise, and adds a place where levels can be wrong. Four built-in preamps mean every microphone lands on the interface at a level the converter can handle directly, which is why this unit shows up in multi-guest discussion more than any cheaper four-channel box.
No loopback and USB 2.0 limit what you can do with it
If your show is mostly remote guests on a live call, the missing loopback matters and you should pick a two-channel unit that has it. USB 2.0 is not a problem for four recorded channels at podcast buffer sizes, but it is a limit on how far you can push the monitoring latency before the system complains. Treat this as a recording-first box, not a streaming-first one.
6. M-Audio M-Track Duo USB Audio Interface
M-AUDIO M-Track Duo USB Audio Interface
Two combo XLR line and instrument inputs
48kHz
Zero-latency USB/Direct switch
Crystal preamps
Pros
- Two combo inputs for two microphones
- Zero-latency monitoring via a front switch
- USB bus powered and compact
- Works with Mac Windows iOS and Android
Cons
- 48kHz maximum sample rate
- Gain knob has a non-linear taper near the top
- All-plastic construction
The M-Track Duo is an inexpensive way to get two real microphone preamps, and for a beginner with a co-host it solves the right problem at the right scale. Both inputs are combo connectors, so each one accepts an XLR microphone, a balanced line-level source through a 1/4 inch TRS jack, or an unbalanced instrument through a 1/4 inch TS jack. You also get a stereo pair of 1/4 inch outputs and a single headphone jack.
The USB/Direct switch on the front changes what your headphones hear. In USB mode you monitor the signal after it has travelled through the computer, which is how you hear a remote caller or a backing track. In Direct mode the signal goes straight from the preamp to your headphones, which is the low-latency path you want while speaking.
It runs on USB bus power, weighs 0.3 kg and measures 4.34 by 7.5 by 2.13 inches. Platform support covers Android, Windows, iOS and macOS, and the included software includes Ableton Live Lite and MPC Beats.
The two limitations worth naming are the 48kHz maximum sample rate, which is plenty for a spoken-word podcast delivered as a standard MP3, and the gain knobs, which have a compressed taper near the top of their travel. The second issue makes the last quarter of the knob range twitchy, so set your level with the meter rather than by ear at the very top of the rotation.
Two combo inputs is the whole value argument
A second preamp at this cost changes what kind of show you can make. With two channels you can record a host and a guest properly, or keep your existing microphone and add one rather than replacing both at once. The combo sockets also mean you can capture a phone line-in or a mixer output on the second channel without a converter box.
The 48kHz ceiling and gain taper are the real trade-offs
Neither limitation will affect a typical podcast delivered as 128 or 192 kbps audio, because 48kHz is the native rate for that workflow and upsampling a spoken-word file to 96kHz changes nothing audible. The gain taper matters more in practice. Set levels with the software meter, and keep the knob below its top quarter.
7. Audient iD14 MKII USB-C Audio Interface
Audient Audio Interface iD14 MKII, 2 Class-A Microphone Preamps (High Performance USB Audio Interface, USB-C Connector, Monitor Mix and Monitor Panning Function, 2 Headphone Outputs), Black
Two Class-A preamps from ASP8024 HE
24-bit/96kHz
ADAT expansion
Two headphone outputs
Pros
- Same Class-A console preamp as the iD4 MKII
- ADAT optical input expands the box by eight channels
- Four outputs support a full monitor setup
- All-metal housing with USB-C
Cons
- No power switch
- Connectivity can drop when the computer sleeps
- Control software has a learning curve
The iD14 MKII is the version of the iD4 for someone who is not finished. It carries the same pair of Class-A microphone preamps drawn from Audient’s ASP8024 hardware, adds four outputs instead of two, and includes an ADAT optical input. That optical port is the important part: attach a compatible eight-channel ADAT converter and the recording side of this interface grows from two microphones to ten without replacing anything.
For a podcaster that is a rare luxury, because it means a show can start as a co-hosted two-person format and become a four-person panel, or a two-mic show plus a two-person remote segment, without a second purchase. It also has two independent headphone outputs, so guests are still handled properly as the channel count grows.
All four outputs are usable, which is what lets you run monitors and a headphone feed at the same time without an external distribution box. The housing is all-metal, the connector is USB-C, and the resolution is 24-bit/96kHz. The bundled software is substantial, including Cubase LE, Cubasis LE 2, a synthesiser, Wall of Sound and a Loopmasters sample pack.
The annoyances are practical rather than audio. There is no hardware power switch, so the unit comes on whenever your computer wakes, and some users report the connection dropping when a computer leaves sleep. The control software takes an afternoon to learn. The unit weighs 907 g and measures 5.91 by 4.72 by 0.59 inches.
ADAT expansion turns two preamps into ten
Most two-channel interfaces are a ceiling. This one is a floor. If you are starting a solo or co-hosted show and you can already see a four-person version of it in eighteen months, the ADAT port means the path exists. Buy the converter only when you need it, and the interface you already own becomes part of a larger rig rather than a discarded one.
Sleep and wake behaviour is the flaw to plan around
Before a live show, restart the interface and the recording software in the order you use every time, and keep the recording app open rather than switching between applications during the session. Neither is a workaround for a hardware fault, but both remove the moment where a dropped connection would be most costly. Set up a test that survives a sleep cycle before you rely on it live.
8. Rode AI-1 USB Audio Interface
Rode AI-1 USB Audio Interface , Black
About 60dB of gain
All-metal chassis
24-bit/96kHz
USB-C
Pros
- Quiet
- low-noise preamp for hard dynamic microphones
- All-metal build in a small footprint
- USB-C with zero-latency direct monitoring
- Firmware updates raised usable gain
Cons
- Only one mic input and one headphone jack
- No loopback MIDI or ADAT
- Reliability reports of dropouts and noise
The AI-1 exists for one person with one good dynamic microphone. The preamp is quiet enough to keep an SM7B or a Rode PodMic usable without the hiss you get from a very cheap two-channel box, and the listed gain range is about 60dB once the current firmware is installed. That last point matters: earlier units shipped with a lower ceiling, and a firmware update moved it. Install the firmware before you judge the gain.
The build is metal rather than plastic, the connector is USB-C, and the resolution is 24-bit/96kHz. It is a small box at 3.94 by 4.88 by 1.5 inches and 16 ounces, with a single XLR mic input that takes phantom power, a quarter-inch headphone output and quarter-inch monitor outputs.
Direct monitoring is available, which is what you want for latency-free headphone feedback while you speak. Operation is a single knob, so there is very little to get wrong, and that simplicity is the appeal for a first-time creator.
Its weaknesses are equally clear. One input means one microphone. There is no loopback, so a remote caller has to be captured through a software virtual device. Reported reliability issues with dropouts and noise exist in the reviews, and the XLR cable is not included, which is an easy surprise on a first setup day. The rating on this one sits below the rest of the list, and the reliability reports are the reason.
About 60dB of gain is the reason to choose it over a cheaper box
If your microphone is a hard dynamic that needs the whole preamp range, this unit gives you roughly sixty decibels with a low noise floor, which is a better place to be than sixty decibels of hiss from a budget two-channel design. It is the single best argument for spending more on one clean channel instead of buying two mediocre ones.
Single input and no loopback narrow it to solo work
There is no way to add a second microphone, no way to grow later, and no hardware route for capturing a remote call. That is fine for a solo show with one host and no live guests. It is the wrong shape for anything else, and it is why the two-channel units above it usually make more sense for the same money.
9. Behringer UMC22 2×2 USB Audio Interface
Behringer UMC22 Audiophile 2×2, 48 kHz USB Audio Interface with Midas Mic Preamplifier | For Recording Microphones and Instruments
MIDAS-designed preamp
Combo XLR TRS and TS input
Direct monitor switch
USB bus powered
Pros
- Lowest entry cost in the roundup with a real MIDAS-designed preamp
- Combo input accepts XLR line or instrument
- Direct monitor switch for zero-latency monitoring
- Signal and clip LEDs
Cons
- One microphone input
- 48kHz sample rate
- Gain may run out of range for quiet dynamic mics
The UMC22 is the cheapest way to own an XLR input at all, and for a first-time creator recording one voice in a treated corner it does the job. The preamp is MIDAS-designed, which is a higher quality lineage than the price suggests, and the input is a combination socket that accepts an XLR microphone, a quarter-inch TRS line input or a quarter-inch TS instrument cable. A direct monitor select switch routes the signal to your headphones without a software round trip.
It is USB bus powered, so there is no power supply to lose, and it works with the major recording applications. Signal and clip LEDs on the top give you a level reference without software open.
The two constraints are input count and headroom. There is one microphone preamp, so this is a solo tool. And the available gain runs out sooner than the units above it, which means a very quiet dynamic microphone at a distance will be harder to bring up to a healthy level. A condenser or a typical dynamic sits comfortably within range.
The sample rate tops out at 48kHz, which matches the delivery format of almost every spoken-word podcast. The case is plastic, and the unit is 16 ounces.
The lowest-cost route to an XLR microphone
Plenty of creators start with a USB microphone and later move to XLR for the upgrade path and the build quality. This is the cheapest way to make that move, and a cheap box that works reliably beats an expensive one you never use. The direct monitor switch means you get latency-free feedback on day one, which is the habit that keeps beginners recording.
One input and limited gain define the ceiling
Do not plan around adding a co-host with this. The moment a second person is in the room you need a second preamp, and the jump from this to a two-channel unit also brings you a second headphone output. If the co-host is more than a maybe, buy the two-channel version from the start.
10. Behringer UMC1820 18×20 USB Audio and MIDI Interface
Behringer UMC1820 Audiophile 18×20 USB Audio/MIDI Interface with Midas Mic Preamplifiers and ADAT I/O | For Recording Microphones and Instruments
Eight MIDAS preamps
18 inputs 20 outputs
ADAT I/O
24-bit/96kHz
Pros
- Eight MIDAS-designed preamps with phantom power
- 18 inputs and 20 outputs
- ADAT expansion for more channels
- Rack mountable with desktop feet included
Cons
- Runs very hot
- Large 1U rack footprint
- USB 2.0 only
- Documentation and manufacturer support are thin
The UMC1820 is in this list because a small number of podcasters genuinely need it, and it is worth being specific about who. Eight MIDAS-designed preamps, 18 inputs and 20 outputs at 24-bit/96kHz, plus an ADAT port. That is a band-recording interface. If you are recording a live audience, a four-person panel plus a music bed, or a narrative show with several tracked sources at once, this is the only unit here that handles it without a mixer in the signal chain.
Twenty outputs is the number that makes it interesting for podcasting. Mix-minus for a remote guest, separate headphone feeds for four people, a monitor pair and a recording of the room ambience are all independent outputs rather than a shared bus. That is the kind of routing a multi-guest live show actually needs.
It is rack mountable with rubber feet for desktop use, so it works on a small studio shelf. Plug-and-play behaviour is reported on both Mac and Windows, and it works with any DAW.
There are real cautions. Reviewers report it runs very hot, which matters for a unit you leave powered between long recording blocks. The enclosure measures 24.35 inches wide, so it needs a proper rack space or a deep desk. USB 2.0 is the older standard. And manufacturer support and documentation are thin, so plan your signal flow yourself.
Eight preamps and twenty outputs cover a live room
A panel show with an audience, a livestream with a producer calling in, or a narrative production tracking several voices at once all hit the same wall: too few inputs, or an analog mixer inserted to create more. Twenty outputs give you genuine mix-minus routing, per-person headphone feeds and a spare output for room capture, all as discrete channels you can record separately.
Heat and documentation are the reasons to look twice
Leave ventilation around the unit and do not stack it under a closed shelf, since sustained heat shortens component life. Read a routing guide before the first session rather than during it, because the input and output layout on a unit this wide is not self-explanatory and support will not walk you through it. If your show is a conversation between one or two people, this is far more machine than you need.
How Many Inputs Do You Actually Need?
Count microphones, not speakers, and then count headphone outputs separately. They are different numbers, and buying for the wrong one is the most common purchasing mistake in this category. A two-microphone show on a unit with one headphone jack means your guest hears nothing, and the standard fix people find is an external headphone splitter, which shares one amplifier and halves the available level.
For a solo show, one XLR and one headphone jack is the whole requirement. A two-host show needs two XLR inputs and two headphone outputs, which rules out most single-channel units. A three or four person panel needs four XLR inputs and either four headphone outputs or a small headphone distribution box. A show with live remote guests adds a hardware loopback or mix-minus requirement on top of the channel count.
Buy for the format you already have, not the format you might want. Upgrading from one preamp to two is a trivial change; going from two headphone outputs to four is not, because that usually means replacing the interface.
If you want the wider picture on channel counts, our guides to 2-channel audio interfaces and multi-channel audio interfaces break down the tiers in more detail.
Loopback, Mix-Minus and Recording Remote Guests
These three terms get used interchangeably and they are not the same thing. Knowing which one you need prevents the most frustrating purchase in this category.
Loopback records the audio your computer is playing back. A remote guest on a video call is playing back through your sound card, and loopback sends that stream back into your session as its own recorded track. Of the ten units here, the Audient EVO 4 has hardware loopback. Everything else needs a software virtual audio device, which most podcast applications can select but which adds a driver to your troubleshooting list.
Mix-minus, also called a clean feed, is a mix that contains everything except the voice of the person hearing it. Without it, a remote guest on a live call hears their own voice in their headphones delayed by the call latency, which makes people talk over themselves. A proper mix-minus bus solves it. Only a handful of podcast consoles offer one as a button; on a bare interface you build it in software or with an analog mixer.
Bluetooth phone input, which the Focusrite Vocaster Two offers, is a third and separate option. It brings a phone call into the session as an input, which is convenient for a call-in segment and is not a substitute for loopback when the guest is already on a computer-based call.
The honest summary: if remote recording is a regular part of your show, buy the hardware that does it. The EVO 4 handles the call-in case. The Vocaster Two handles phone calls and gives you the gain to keep a hard dynamic microphone clean alongside it. If remote work is occasional, software loopback through a virtual device is a reasonable way to start.
Do You Even Need an Interface?
Sometimes you do not, and buying one anyway is a common and expensive first mistake. The decision follows from two facts: what kind of microphone you have, and how many people are speaking.
If you are recording solo on a single USB microphone, the microphone already contains a preamp, a converter and a headphone output, and it connects directly to the computer. An interface adds a second conversion stage and a second preamp, which can only degrade the signal. USB microphones also have a reputation for noise that is usually the fault of the built-in preamp being pushed hard, which an external interface genuinely fixes.
If you use an XLR microphone at all, you need an interface or a small analog mixer with a USB output. There is no path around that.
If two or more people speak at once, you need at least as many inputs as microphones, plus a headphone output per person. This is the case where an interface becomes unavoidable, and where buying a USB microphone per person is a false economy. For a deeper look at the surrounding options, our guide to the best Thunderbolt audio interfaces covers the higher channel counts.
How to Choose an Audio Interface for Podcasting
Seven criteria matter, and they are not equally weighted. Work through them in this order and you will reach the right tier quickly.
1. Input count. Match XLR inputs to microphones now, not to microphones you imagine. One for solo, two for a co-host, four for a panel.
2. Headphone outputs. One jack per person who speaks. Independent level control per jack is a genuine step up from a splitter, which shares a single amplifier.
3. Preamp gain and noise. Condensers need 30 to 40dB. Hard dynamics such as the SM7B and RE20 need 55dB or more to reach level without hiss. Anything above 70dB means an inline booster is never needed. The Vocaster Two and the iD4 MKII and iD14 MKII sit highest in this list for that reason.
4. Loopback and mix-minus. Needed the day you record a remote guest live. Confirm it exists before you buy, not after.
5. Connectivity and power. USB-C is the current standard. Bus power removes an adapter from the failure list. Thunderbolt is worth a look for low-latency monitoring at high channel counts.
6. Platform support. Check that the unit is listed for your operating system, and that it is class-compliant or has current drivers. Windows driver reliability is the most common complaint in buyer forums, and the vocal popup on every connection that the Scarlett Solo triggers is a small example of the same category of irritation.
7. Monitoring options. A direct hardware monitor path gives you latency-free feedback. A monitor mix control lets a guest hear a different mix from yours. USB/Direct switches, as on the M-Track Duo and the UMC22, are the simplest version of this.
Beyond the interface, a working podcast setup needs: an XLR microphone, closed-back headphones, a balanced XLR cable per microphone, a shock mount, a pop filter, a boom arm or desk stand, and some acoustic treatment on the wall behind the microphone. No interface fixes a reflective room, and a treated room recorded through a budget box usually sounds better than an untreated room recorded through an excellent one.
Setting Up Your Interface for Your First Episode
Five steps, in order, and the first episode is a test rather than a broadcast.
Step 1: install the driver first. Download the driver from the manufacturer before you plug anything in, install it, and reboot. Windows machines in particular behave unpredictably when a driver is installed after first connection.
Step 2: connect the microphone and set gain. Plug the XLR cable into the interface, switch phantom power on only if the microphone is a condenser or ribbon, then set the gain so the loudest part of your speaking reaches roughly two-thirds of full scale on the meter. Speak loudly, not normally, during this step.
Step 3: check monitoring latency. Put on headphones, set the direct monitor path, and clap your hands. A short flat sound with no echo between the clap and the headphone signal means you have a direct path. Any doubling means monitoring is going through the computer, and you should lower the buffer size in your recording software.
Step 4: set the buffer size and sample rate. Use 48kHz and a buffer of 64 to 128 samples for recording, and raise it to 512 or higher while editing. That split is what keeps playback stable during a mix.
Step 5: record a full test episode, then listen back on speakers and on headphones. Check level consistency, check for hum, and check for mouth noise and plosives. A twenty-minute test episode will surface more problems than a week of reading specifications.
Frequently Asked Questions
What is the best audio interface for podcasting?
For most creators the Focusrite Scarlett Solo 3rd Gen is the best starting point, with 56dB of clean gain, reliable drivers and a single XLR input. For a co-hosted show the Audient EVO 4 adds a second preamp, split phantom power and loopback. For a guest who calls in by phone, the Focusrite Vocaster Two gives you two microphones, two headphone outputs and over 70dB of gain.
Which audio interface has the best sound quality?
The audible difference in this list is preamp noise, and the Class-A units from Audient lead: the iD4 MKII and the iD14 MKII use a console-derived Class-A microphone preamp, and the EVO 4 uses Audient preamps with AKM converters. For a single hard dynamic microphone the Focusrite Vocaster Two offers the most gain at over 70dB. For a multi-person panel the Behringer UMC404HD gives you four MIDAS preamps in one box.
Do I need an audio interface for a podcast?
You need one if you use an XLR microphone, or if two or more people speak at the same time. You do not need one if you record solo on a single USB microphone, because the microphone already contains a preamp, a converter and a headphone output. Adding an interface in that case adds a second conversion stage and can only degrade the signal.
How many XLR inputs do I need for a podcast?
Count microphones, then count headphone outputs separately. A solo show needs one XLR and one headphone jack. A two-host show needs two XLR inputs and two headphone outputs. A three or four person panel needs four XLR inputs plus either four headphone outputs or a small headphone distribution box. A show with live remote guests also needs loopback or a mix-minus bus.
Which interface is better than Focusrite?
It depends on what the Scarlett lacks. The Audient EVO 4 adds a second preamp, per-channel phantom power switching, automatic gain setting and hardware loopback. The Audient iD4 MKII adds a quieter Class-A preamp and a second headphone output. The Audient iD14 MKII adds four outputs and ADAT expansion. The Focusrite Vocaster Two adds over 70dB of gain, auto gain, phone connectivity and a camera output.
Can I record a podcast without a computer?
Not with any of the ten interfaces in this guide. Every one of them sends audio to a computer, tablet or phone over USB and relies on that device for recording. A standalone recorder with an SD card is a different product category. It is worth considering if you record in places where a laptop crash would lose an episode, but it removes the multitrack editing workflow most podcasters depend on.
Conclusion: Our Podcast Picks for 2026
The best audio interfaces for podcast recording depend almost entirely on how many people speak in your room. Record solo and the Focusrite Scarlett Solo 3rd Gen is the pick: 56dB of clean gain, dependable drivers and monitoring that stays out of your way. Run a co-hosted show and the Audient EVO 4 gives you a second preamp, per-channel phantom power and hardware loopback for remote calls. Bring in a phone guest or fight a quiet broadcast dynamic and the Focusrite Vocaster Two, with over 70dB of gain and two headphone outputs, handles the load.
Beyond two voices, the Behringer UMC404HD covers a panel and the Behringer UMC1820 covers a live room, while the Audient iD14 MKII is the one to buy if you can already see your format growing. Whatever you choose, run the five-step test setup before you record anything you care about, and treat room treatment as a more important purchase than the next tier of interface.